US2442354A - Dual wheel suspension for tracklaying vehicles - Google Patents
Dual wheel suspension for tracklaying vehicles Download PDFInfo
- Publication number
- US2442354A US2442354A US604283A US60428345A US2442354A US 2442354 A US2442354 A US 2442354A US 604283 A US604283 A US 604283A US 60428345 A US60428345 A US 60428345A US 2442354 A US2442354 A US 2442354A
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- Prior art keywords
- trunnion
- wheels
- suspension
- arms
- vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/104—Suspension devices for wheels, rollers, bogies or frames
- B62D55/108—Suspension devices for wheels, rollers, bogies or frames with mechanical springs, e.g. torsion bars
Definitions
- Track laying vehicles particularly of the heavily loaded type, such as the ordnance or combat vehicles are commonly provided with multiple suspension units, each consisting of one or more wheels which bear against the track. More recently many of these vehicles have included the horizontal volute spring suspension in which a suitable spring is mounted between the ends of bell crank levers on other ends of which the suspension wheels were mounted.
- One of the principal features of our invention is to provide an equalizing mechanism between the inside and outside wheels of a dual suspension mechanism for a track laying vehicle, whereby inclined movement of the vehicle will allow full support of the vehicle by the suspension wheels.
- a further object of our invention is to provide a simplified suspension'for a dual wheel, track laying -bogie in which parts may be readily assembled and disassembled and in which parts are standard and reversible and in which maintenance and repair are reduced to a minimum.
- a still further object of our invention is to provide a dual wheel bogie suspension having a transverse bearing which will permit limited angular movement of the wheel axle so that vari ations of angularity can be compensated to establish uniform support and minimum loading conditions.
- Figure 1 is an elevation of a suspension of the dual wheel bogie type with parts broken away and parts in section;
- Figure 2 is a top plan view of the suspension shown in Figure 1;
- Figure 3 is an end view of the suspension
- Figure 4 is a perspective view of the trunnion member.
- the suspension for a track laying vehicle may consist of one or more bogle units appropriately secured to the body l0 by suitable means I I which attach the bracket II.
- the bracket l2 carries a pair of arms ll of bell crank type, which are fulcrumed at l6 to the bracket and with their upward motion resisted by the horizontal volute spring ll.
- a shock absorber 20 is also placed between extensions of the arms It to resist sudden movement as is well known in the art.
- Each of the arms II is intended to carry a pair of wheels 22, such wheels being suitably spaced to permit the use of a track 24 with a center guide 26.
- this track may be driven by suitable means if desired, such mechanism serving as no part of our invention.
- the present form of wheels 22 have a resilient tread which is suitably bonded to'the wheel rim and is adapted to take a specified load .based on the width of the rim.
- a resilient tread which is suitably bonded to'the wheel rim and is adapted to take a specified load .based on the width of the rim.
- a trunnion member 30 shown particularly in Figure 4 which is adapted to be mounted in the lower portion of the arm I. A detail of such construction is shown in Figural.
- This trunnion is preferably provided with two bearing portions 3
- the trunnion 30 also has a large transverse central bore 33 which carries the double ended wheel axle 34.
- a locking plate 35 is inserted behind the overhanging shoulder 36 on the arm I and in front of the upstanding lugs 31 on the trunnion. This locking plate 35 is held in position by a stud 38.
- the upstanding lugs 31 have a further function of limiting angular movement of the trunnion 30 and thus preventing contact of the wheels 22' either with the arms I or with the vehicle body or materially rubbing on the center track guides. As shown in Figure 3, the lugs 31 engage on one srees one side or the other of a vertical was considered the limit.
- Tests of the structure as compared to the fixed type of wheels indicates on some terrain that as much as 40% longer tire life is possible. This is not possible where the wheels are rigidly mounted on one spindle.
- a bogie suspension for a track laying vehicle comprising a supporting bracket adapted to be secured to the frame of such vehicle, a pair of hell crank arms oppositely fulcrumed to said bracket, each of said arms having a lower portion and an upwardly extending portion, resilient means between said upwardly extending portions of said arms to resist relative movement of the latter, means to support dual spaced wheels from said lower portion of each of said arms, said means comprising an axle carrying trunnion member rotatably mounted in each of said lower portions and carried thereby, whereby the plane of said dual wheels can deviate from a vertical plane, and stop means to limit such deviation.
- a bogie suspension for a track laying vehicle comprising a supporting bracket adapted to be secured to the frame of such vehicle, a pair of bell crank arms oppositely fulcrumed to said bracket, each of said arms having a lower portion and an upwardly extending portion, resilient means between said upwardly extending portions of said arms to resist relative movement of the latter, an axle carrying trunnion member rotatably mounted in each said lower portion, means for mounting dual spaced wheels on the axle of said axle carrying trunnion member, and stop means on said trunnion member to limit rotation thereof thereby permitting limited deviation of the plane of said wheels from a vertical plane.
- a bogie suspension for a track laying vehicle comprising a supporting bracket adapted to be secured to the frame of such vehicle, a pair of bell crank arms oppositely fulcrumed to said bracket, each of said arms having a lower portion and an upwardly extending portion, resilient means between said upwardly extending portions of said arms to resist relative movement of the latter, a trunnion member rotatably mounted in each of said lower portions, an axle carried by each said trunnion member, laterally spaced dual wheels on said axle, means to limit rotation of said trunnion member, and means to prevent axial movement of said trunnion member,
- a bogie suspension for a track laying vehicle comprising a supporting bracket adapted to be secured to the frame of such vehicle, a pair of hell crank arms oppositely fulcrumed to said bracket, each of said arms having a lower portion and an upwardly extending portion, resilient means between said upwardly extending portions of said arms to resist relative movement of the latter, a trunnion rotatabl mounted in each of said lower portions, lugs on said trunnion adapted to engage said lower portion and thereby limit angular rotation of said trunnion, an axle carried by said trunnion, and dual spaced wheels carried by said axle.
- a bogie suspension for a track laying vehicle comprising a supporting bracket adapted to be secured to the frame of such vehicle, a pair of bell crank arms oppositely fulcrumed to said bracket, each of said arms having a lower portion and an upwardly extending portion, resilient means between said upwardly extending portions of said arms to resist relative movement of the latter, a trunnion rotatably mounted in each of said'lower portions. lugs on said trunnion adapted to engage said lower portion and thereby limit angular rotation of said trunnion, a removable looking member adjacent said lower portion and said trunnion to limit axial movement thereof and to permit its withdrawal, an axle carried by said trunnion, and dual spaced wheels carried by said axle.
Description
June 1, 1948. GORDON, JR" ETAL 2,442,354
DUAL WHEEL SUSPENSION FOR TRACK LAYING VEHICLES Filed July 10, 1945 MENTOR.
m J mu 0A Du" R 0m 2 J m 0, D .H on M Jr. w 4 2 u 6 O2 ATTORNEYS Patented June 1, 1948 UNITED STATES PATENT OFFICE DUAL WHEEL SUSPENSION FOR TRACK- LAYING VEHICLES John J. Gordon, In, Columbus, and Fred L. Haushalter, Akron, Ohio Application July 10, 1945, Serial No. 604,283
(Granted under the act of March 3, 1883, as
Claims.
amended April 30, 1928; 370 0. G. 157) Track laying vehicles, particularly of the heavily loaded type, such as the ordnance or combat vehicles are commonly provided with multiple suspension units, each consisting of one or more wheels which bear against the track. More recently many of these vehicles have included the horizontal volute spring suspension in which a suitable spring is mounted between the ends of bell crank levers on other ends of which the suspension wheels were mounted.
As the loads have increased, it has been found necessary to use a plurality of wheels with a center guide track, as such wheels have rubber tires with a limited surface pressure loading. It is with this dual wheel suspension that our invention pertains.
One of the principal features of our invention is to provide an equalizing mechanism between the inside and outside wheels of a dual suspension mechanism for a track laying vehicle, whereby inclined movement of the vehicle will allow full support of the vehicle by the suspension wheels.
A further object of our invention is to provide a simplified suspension'for a dual wheel, track laying -bogie in which parts may be readily assembled and disassembled and in which parts are standard and reversible and in which maintenance and repair are reduced to a minimum.
A still further object of our invention is to provide a dual wheel bogie suspension having a transverse bearing which will permit limited angular movement of the wheel axle so that vari ations of angularity can be compensated to establish uniform support and minimum loading conditions.
Further objects and advantages of our invention will be apparent from the following description of a preferred form of embodiment thereof, taken in connection with the attached drawings, in which:
Figure 1 is an elevation of a suspension of the dual wheel bogie type with parts broken away and parts in section;
Figure 2 is a top plan view of the suspension shown in Figure 1;
Figure 3 is an end view of the suspension, and
Figure 4 is a perspective view of the trunnion member.
The suspension for a track laying vehicle may consist of one or more bogle units appropriately secured to the body l0 by suitable means I I which attach the bracket II. In the particular embodiment shown, the bracket l2 carries a pair of arms ll of bell crank type, which are fulcrumed at l6 to the bracket and with their upward motion resisted by the horizontal volute spring ll. A shock absorber 20 is also placed between extensions of the arms It to resist sudden movement as is well known in the art.
Each of the arms II is intended to carry a pair of wheels 22, such wheels being suitably spaced to permit the use of a track 24 with a center guide 26. As is well known, this track may be driven by suitable means if desired, such mechanism serving as no part of our invention.
The present form of wheels 22 have a resilient tread which is suitably bonded to'the wheel rim and is adapted to take a specified load .based on the width of the rim. We have found however that in operating combat vehicles having loads as high as thirty to fifty tons that unusual tire damage results when the vehicle traverses other than smooth level ground. At one time, for example, when a tank was brought to a stop with the tracks inclined 2 with the horizontal, all of the inside wheels on one side of the vehicle continued to spin. This clearly indicates unequal loading on the dual tires.
In order to avoid this unbalanced condition, we provide a trunnion member 30 shown particularly in Figure 4, which is adapted to be mounted in the lower portion of the arm I. A detail of such construction is shown in Figural. This trunnion is preferably provided with two bearing portions 3| and 32 which may effectively be rotatably mounted as by suitable bushings or rubber inclosed rings. The trunnion 30 also has a large transverse central bore 33 which carries the double ended wheel axle 34.
To limit the axial movement of the trunnion 30, a locking plate 35 is inserted behind the overhanging shoulder 36 on the arm I and in front of the upstanding lugs 31 on the trunnion. This locking plate 35 is held in position by a stud 38.
The removal of the stud 38 and the plate 35 will permit the withdrawal of the trunnion from its seat.
The upstanding lugs 31 have a further function of limiting angular movement of the trunnion 30 and thus preventing contact of the wheels 22' either with the arms I or with the vehicle body or materially rubbing on the center track guides. As shown in Figure 3, the lugs 31 engage on one srees one side or the other of a vertical was considered the limit.
The mounting of the wheels on the hubs that in turn are mounted on the axles and other details of construction are not described in full, it being understood that the wheels are customarily demountable.
Tests of the structure as compared to the fixed type of wheels indicates on some terrain that as much as 40% longer tire life is possible. This is not possible where the wheels are rigidly mounted on one spindle.
While we have shown preferred forms of embodiment of our invention, we consider other variations to be within the scope and spirit of our invention which is not to be limited except in accordance with the claims attached hereto.
What we claim is:
1. A bogie suspension for a track laying vehicle comprising a supporting bracket adapted to be secured to the frame of such vehicle, a pair of hell crank arms oppositely fulcrumed to said bracket, each of said arms having a lower portion and an upwardly extending portion, resilient means between said upwardly extending portions of said arms to resist relative movement of the latter, means to support dual spaced wheels from said lower portion of each of said arms, said means comprising an axle carrying trunnion member rotatably mounted in each of said lower portions and carried thereby, whereby the plane of said dual wheels can deviate from a vertical plane, and stop means to limit such deviation.
2. A bogie suspension for a track laying vehicle comprising a supporting bracket adapted to be secured to the frame of such vehicle, a pair of bell crank arms oppositely fulcrumed to said bracket, each of said arms having a lower portion and an upwardly extending portion, resilient means between said upwardly extending portions of said arms to resist relative movement of the latter, an axle carrying trunnion member rotatably mounted in each said lower portion, means for mounting dual spaced wheels on the axle of said axle carrying trunnion member, and stop means on said trunnion member to limit rotation thereof thereby permitting limited deviation of the plane of said wheels from a vertical plane.
3. A bogie suspension for a track laying vehicle comprising a supporting bracket adapted to be secured to the frame of such vehicle, a pair of bell crank arms oppositely fulcrumed to said bracket, each of said arms having a lower portion and an upwardly extending portion, resilient means between said upwardly extending portions of said arms to resist relative movement of the latter, a trunnion member rotatably mounted in each of said lower portions, an axle carried by each said trunnion member, laterally spaced dual wheels on said axle, means to limit rotation of said trunnion member, and means to prevent axial movement of said trunnion member,
4. A bogie suspension for a track laying vehicle comprising a supporting bracket adapted to be secured to the frame of such vehicle, a pair of hell crank arms oppositely fulcrumed to said bracket, each of said arms having a lower portion and an upwardly extending portion, resilient means between said upwardly extending portions of said arms to resist relative movement of the latter, a trunnion rotatabl mounted in each of said lower portions, lugs on said trunnion adapted to engage said lower portion and thereby limit angular rotation of said trunnion, an axle carried by said trunnion, and dual spaced wheels carried by said axle.
5. A bogie suspension for a track laying vehicle comprising a supporting bracket adapted to be secured to the frame of such vehicle, a pair of bell crank arms oppositely fulcrumed to said bracket, each of said arms having a lower portion and an upwardly extending portion, resilient means between said upwardly extending portions of said arms to resist relative movement of the latter, a trunnion rotatably mounted in each of said'lower portions. lugs on said trunnion adapted to engage said lower portion and thereby limit angular rotation of said trunnion, a removable looking member adjacent said lower portion and said trunnion to limit axial movement thereof and to permit its withdrawal, an axle carried by said trunnion, and dual spaced wheels carried by said axle.
JOHN J. GORDON, JR. FRED L. HAUSHALTER.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,547,043 Kegresse July 21, 1925 1,547,586 Kegresse July 28, 1925 1,585,100 Kegresse May 18, 1926 1,725,817 Mitchell Aug, 27, 1929 1,936,954 Robin Nov. 28, 1933 2,121,862 Dodge June 28, 1938 2,308,331 Heaslet Jan. 12, 1943 2,367,220 Knox Jan. 16, 1945
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US604283A US2442354A (en) | 1945-07-10 | 1945-07-10 | Dual wheel suspension for tracklaying vehicles |
Applications Claiming Priority (1)
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US604283A US2442354A (en) | 1945-07-10 | 1945-07-10 | Dual wheel suspension for tracklaying vehicles |
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Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2597122A (en) * | 1946-08-07 | 1952-05-20 | Mechanical Handling Sys Inc | Air spring dual wheel running gear |
US2641481A (en) * | 1949-03-17 | 1953-06-09 | Cranes Dereham Ltd | Bogie beam construction |
US2795434A (en) * | 1953-06-08 | 1957-06-11 | Gonirand Rene | Pneumatic suspension for vehicles |
US2862724A (en) * | 1955-05-23 | 1958-12-02 | Eisenhauer Mfg Company | By-pass arrangement for vehicle suspension |
US2933326A (en) * | 1958-06-17 | 1960-04-19 | Industrial Nucleonics Corp | Self-aligning truck assembly |
US3055677A (en) * | 1960-10-03 | 1962-09-25 | Otho W Smith | Vehicle wheel suspension |
US4030738A (en) * | 1976-07-19 | 1977-06-21 | Willetts Elwood H | Tandem axle vehicle suspension system |
US4162799A (en) * | 1977-06-16 | 1979-07-31 | Willetts Elwood H | Truck suspension system |
EP0027994A1 (en) * | 1979-10-25 | 1981-05-06 | Krauss-Maffei Aktiengesellschaft | Endless track drive mechanism |
EP1683660A1 (en) * | 2005-01-21 | 2006-07-26 | Vignes, Evic | Suspensions with strain compensation |
US20100201186A1 (en) * | 2000-05-02 | 2010-08-12 | Lyn Rosenboom | Vehicle track assembly |
US9033431B1 (en) | 2010-06-30 | 2015-05-19 | Camoplast Solideal Inc | Track assembly for an off-road vehicle |
EP2921378A2 (en) | 2014-03-20 | 2015-09-23 | CLAAS Industrietechnik GmbH | Piste preparation vehicle |
AU2014276848B2 (en) * | 2013-06-05 | 2016-09-01 | Cnh Industrial Belgium Nv | Rubber track unit for vehicle |
US10124843B2 (en) * | 2016-06-22 | 2018-11-13 | Soucy International Inc. | Track system |
CN109562800A (en) * | 2016-08-02 | 2019-04-02 | 凯斯纽荷兰(中国)管理有限公司 | Caterpillar system for working truck |
US10343734B2 (en) | 2014-09-29 | 2019-07-09 | Soucy International Inc. | Track system having low vibrations |
US10526027B2 (en) | 2014-09-29 | 2020-01-07 | Soucy International Inc. | Damping system for an endless track system |
US10633044B2 (en) | 2014-09-29 | 2020-04-28 | Soucy International Inc. | Dynamic tensioner locking device for a track system and method thereof |
US10640160B2 (en) | 2014-09-29 | 2020-05-05 | Soucy International Inc. | Progressive damping system for a track system |
US10668962B2 (en) | 2014-09-29 | 2020-06-02 | Soucy International Inc. | Track system |
US10875591B2 (en) | 2015-08-04 | 2020-12-29 | Camso Inc. | Track system for traction of an agricultural vehicle travelling on fields and roads |
US11661125B2 (en) | 2011-06-13 | 2023-05-30 | Camso Inc. | Track assembly for traction of an off-road vehicle |
Citations (8)
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US1547043A (en) * | 1922-11-03 | 1925-07-21 | Kegresse Adolphe | Supporting device for endless track belts |
US1547586A (en) * | 1922-11-03 | 1925-07-28 | Kegresse Adolphe | Supporting device for endless track belts |
US1585100A (en) * | 1924-04-15 | 1926-05-18 | Kegresse Adolphe | Load-distributing device for endless-track vehicles |
US1725817A (en) * | 1925-02-25 | 1929-08-27 | Harnischfeger Corp | Flexible-tread truck |
US1936954A (en) * | 1930-10-25 | 1933-11-28 | Wellman Engineering Company | Vehicle |
US2121862A (en) * | 1937-02-25 | 1938-06-28 | Four Wheel Drive Auto Company | Heavy duty vehicle construction |
US2308331A (en) * | 1941-05-02 | 1943-01-12 | Cleveland Tractor Co | Track wheel suspension for tracklaying tractors |
US2367220A (en) * | 1942-01-06 | 1945-01-16 | Harry A Knox | Hydraulic check |
-
1945
- 1945-07-10 US US604283A patent/US2442354A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US1547043A (en) * | 1922-11-03 | 1925-07-21 | Kegresse Adolphe | Supporting device for endless track belts |
US1547586A (en) * | 1922-11-03 | 1925-07-28 | Kegresse Adolphe | Supporting device for endless track belts |
US1585100A (en) * | 1924-04-15 | 1926-05-18 | Kegresse Adolphe | Load-distributing device for endless-track vehicles |
US1725817A (en) * | 1925-02-25 | 1929-08-27 | Harnischfeger Corp | Flexible-tread truck |
US1936954A (en) * | 1930-10-25 | 1933-11-28 | Wellman Engineering Company | Vehicle |
US2121862A (en) * | 1937-02-25 | 1938-06-28 | Four Wheel Drive Auto Company | Heavy duty vehicle construction |
US2308331A (en) * | 1941-05-02 | 1943-01-12 | Cleveland Tractor Co | Track wheel suspension for tracklaying tractors |
US2367220A (en) * | 1942-01-06 | 1945-01-16 | Harry A Knox | Hydraulic check |
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2597122A (en) * | 1946-08-07 | 1952-05-20 | Mechanical Handling Sys Inc | Air spring dual wheel running gear |
US2641481A (en) * | 1949-03-17 | 1953-06-09 | Cranes Dereham Ltd | Bogie beam construction |
US2795434A (en) * | 1953-06-08 | 1957-06-11 | Gonirand Rene | Pneumatic suspension for vehicles |
US2862724A (en) * | 1955-05-23 | 1958-12-02 | Eisenhauer Mfg Company | By-pass arrangement for vehicle suspension |
US2933326A (en) * | 1958-06-17 | 1960-04-19 | Industrial Nucleonics Corp | Self-aligning truck assembly |
US3055677A (en) * | 1960-10-03 | 1962-09-25 | Otho W Smith | Vehicle wheel suspension |
US4030738A (en) * | 1976-07-19 | 1977-06-21 | Willetts Elwood H | Tandem axle vehicle suspension system |
US4162799A (en) * | 1977-06-16 | 1979-07-31 | Willetts Elwood H | Truck suspension system |
EP0027994A1 (en) * | 1979-10-25 | 1981-05-06 | Krauss-Maffei Aktiengesellschaft | Endless track drive mechanism |
US20160362148A1 (en) * | 2000-05-02 | 2016-12-15 | Camso Inc. | Vehicle Track Assembly |
US10259512B2 (en) * | 2000-05-02 | 2019-04-16 | Camso Inc. | Vehicle track assembly |
US20100201186A1 (en) * | 2000-05-02 | 2010-08-12 | Lyn Rosenboom | Vehicle track assembly |
US8342257B2 (en) | 2000-05-02 | 2013-01-01 | Camoplast Solideal Inc. | Vehicle track assembly |
US8763716B2 (en) | 2000-05-02 | 2014-07-01 | Camoplast Solideal Inc. | Vehicle track assembly |
US9440691B2 (en) | 2000-05-02 | 2016-09-13 | Camso Inc. | Vehicle track assembly |
FR2881083A1 (en) * | 2005-01-21 | 2006-07-28 | Eric Vignes | SUSPENSIONS WITH COMPENSATION OF CONSTRAINTS |
EP1683660A1 (en) * | 2005-01-21 | 2006-07-26 | Vignes, Evic | Suspensions with strain compensation |
US9033431B1 (en) | 2010-06-30 | 2015-05-19 | Camoplast Solideal Inc | Track assembly for an off-road vehicle |
US11661125B2 (en) | 2011-06-13 | 2023-05-30 | Camso Inc. | Track assembly for traction of an off-road vehicle |
AU2014276848B2 (en) * | 2013-06-05 | 2016-09-01 | Cnh Industrial Belgium Nv | Rubber track unit for vehicle |
US9415817B2 (en) | 2014-03-20 | 2016-08-16 | Claas Industrietechnik Gmbh | Crawler vehicle |
EP2921378B1 (en) * | 2014-03-20 | 2018-07-25 | CLAAS Industrietechnik GmbH | Piste preparation vehicle |
EP2921378A2 (en) | 2014-03-20 | 2015-09-23 | CLAAS Industrietechnik GmbH | Piste preparation vehicle |
US10640160B2 (en) | 2014-09-29 | 2020-05-05 | Soucy International Inc. | Progressive damping system for a track system |
US10343734B2 (en) | 2014-09-29 | 2019-07-09 | Soucy International Inc. | Track system having low vibrations |
US10526027B2 (en) | 2014-09-29 | 2020-01-07 | Soucy International Inc. | Damping system for an endless track system |
US10633044B2 (en) | 2014-09-29 | 2020-04-28 | Soucy International Inc. | Dynamic tensioner locking device for a track system and method thereof |
US10640162B2 (en) | 2014-09-29 | 2020-05-05 | Soucy International Inc. | Tensioning system for an endless track system |
US10668962B2 (en) | 2014-09-29 | 2020-06-02 | Soucy International Inc. | Track system |
US11286013B2 (en) | 2014-09-29 | 2022-03-29 | Soucy International Inc. | Dynamic tensioner locking device for a track system and method thereof |
US10875591B2 (en) | 2015-08-04 | 2020-12-29 | Camso Inc. | Track system for traction of an agricultural vehicle travelling on fields and roads |
US10124843B2 (en) * | 2016-06-22 | 2018-11-13 | Soucy International Inc. | Track system |
US11208162B2 (en) | 2016-06-22 | 2021-12-28 | Soucy International Inc. | Track system |
CN109562800B (en) * | 2016-08-02 | 2022-02-11 | 凯斯纽荷兰(中国)管理有限公司 | Track system for work vehicle |
CN109562800A (en) * | 2016-08-02 | 2019-04-02 | 凯斯纽荷兰(中国)管理有限公司 | Caterpillar system for working truck |
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